From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- include/media/v4l2-clk.h | 76 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 include/media/v4l2-clk.h (limited to 'include/media/v4l2-clk.h') diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h new file mode 100644 index 000000000..7ec857f80 --- /dev/null +++ b/include/media/v4l2-clk.h @@ -0,0 +1,76 @@ +/* + * V4L2 clock service + * + * Copyright (C) 2012-2013, Guennadi Liakhovetski + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * ATTENTION: This is a temporary API and it shall be replaced by the generic + * clock API, when the latter becomes widely available. + */ + +#ifndef MEDIA_V4L2_CLK_H +#define MEDIA_V4L2_CLK_H + +#include +#include +#include +#include + +struct module; +struct device; + +struct clk; +struct v4l2_clk { + struct list_head list; + const struct v4l2_clk_ops *ops; + const char *dev_id; + int enable; + struct mutex lock; /* Protect the enable count */ + atomic_t use_count; + struct clk *clk; + void *priv; +}; + +struct v4l2_clk_ops { + struct module *owner; + int (*enable)(struct v4l2_clk *clk); + void (*disable)(struct v4l2_clk *clk); + unsigned long (*get_rate)(struct v4l2_clk *clk); + int (*set_rate)(struct v4l2_clk *clk, unsigned long); +}; + +struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, + const char *dev_name, + void *priv); +void v4l2_clk_unregister(struct v4l2_clk *clk); +struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id); +void v4l2_clk_put(struct v4l2_clk *clk); +int v4l2_clk_enable(struct v4l2_clk *clk); +void v4l2_clk_disable(struct v4l2_clk *clk); +unsigned long v4l2_clk_get_rate(struct v4l2_clk *clk); +int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate); + +struct module; + +struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, + unsigned long rate, struct module *owner); +void v4l2_clk_unregister_fixed(struct v4l2_clk *clk); + +static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id, + unsigned long rate) +{ + return __v4l2_clk_register_fixed(dev_id, rate, THIS_MODULE); +} + +#define V4L2_CLK_NAME_SIZE 64 + +#define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \ + "%d-%04x", adap, client) + +#define v4l2_clk_name_of(name, size, node) snprintf(name, size, \ + "of-%pOF", node) + +#endif -- cgit v1.2.3